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Components of Accumulated Other Comprehensive Earnings / (Losses) (Parenthetical) (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency translation adjustment attributable to noncontrolling interests	$ (16)	$ (1)

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to noncontrolling interests.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 810



-SubTopic 10



-Section 45



-Paragraph 19



-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 810



-SubTopic 10



-Section 50



-Paragraph 1A



-Subparagraph (c)(3)



-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 810



-SubTopic 10



-Section 45



-Paragraph 20



-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569643-111683

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